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Classify each of the following as being...

Classify each of the following as being either a p-type of a n-type semiconductor:
(i) Ge doped with In (ii) Si doped with B.

Text Solution

Verified by Experts

(i) Ge is Group 14 element and In is Group 13 element. Hence, an electron deficit hole is created and therefore, it is p-type
(ii) B is Group 13 element and Si is Group 14 element. there will be a free electron. Hence, it is n- type.
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Knowledge Check

  • Classify each of the following as being either a p-type or an n-type semiconductor a. Ge doped with In b. B doped with Si

    A
    group 14 elements
    B
    group 15 elements
    C
    group 13 elements
    D
    group 18 elements

  • In a P -type semiconductor, germanium is doped with

    A
    p-type semiconductor Ge Ge Ge Ge
    B
    C
    No change in conductivity Ge Ge Ge Ge
    D
    It becomes superconductor Ge Ge Ge Ge

  • p-type semi-conductors are formed when Si or Ge are doped with:

    A
    Group 14 elements
    B
    Group 15 elements
    C
    Group 13 elements
    D
    Group 18 elements